Patents by Inventor Kyung Su HA

Kyung Su HA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11360356
    Abstract: A liquid crystal display device includes a first substrate and a second substrate facing each other; a thin film transistor in a pixel region on the first substrate; a first electrode on the thin film transistor; and a second electrode on the first electrode and connected to the thin film transistor, wherein the second electrode includes a first rib electrode and a second rib electrode, wherein the first rib electrode and the second rib electrode are connected by a connection electrode, wherein a vertical opening is between the first rib electrode and the second rib electrode and along a first direction, and wherein the connection electrode includes a hole at a region adjacent to the vertical opening.
    Type: Grant
    Filed: July 3, 2020
    Date of Patent: June 14, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Won-Taeck Kim, Kyung-Su Ha
  • Patent number: 11156865
    Abstract: A liquid crystal display device includes: a substrate; a thin film transistor in a pixel region over the substrate; a common electrode over the thin film transistor; a pixel electrode connected to the thin film transistor; and a liquid crystal layer including a plurality of liquid crystal capsules over the common electrode and the pixel electrode, wherein each of the plurality of liquid crystal capsules includes a shell and a core having a plurality of liquid crystal molecules therein, and wherein a gap distance between the liquid crystal molecules in adjacent liquid crystal capsules is equal to or greater than 20 nm and equal to or smaller than 0.3 times of a capsule diameter of the adjacent liquid crystal capsules.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: October 26, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyeong-Jin Kim, Kyung-Su Ha, Eun-Woo Lee
  • Publication number: 20210088816
    Abstract: A liquid crystal display device includes: a substrate; a thin film transistor in a pixel region over the substrate; a common electrode over the thin film transistor; a pixel electrode connected to the thin film transistor; and a liquid crystal layer including a plurality of liquid crystal capsules over the common electrode and the pixel electrode, wherein each of the plurality of liquid crystal capsules includes a shell and a core having a plurality of liquid crystal molecules therein, and wherein a gap distance between the liquid crystal molecules in adjacent liquid crystal capsules is equal to or greater than 20 nm and equal to or smaller than 0.3 times of a capsule diameter of the adjacent liquid crystal capsules.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyeong-Jin KIM, Kyung-Su HA, Eun-Woo LEE
  • Patent number: 10895772
    Abstract: A liquid crystal display device includes: a substrate; a thin film transistor in a pixel region over the substrate; a common electrode over the thin film transistor; a pixel electrode connected to the thin film transistor; and a liquid crystal layer including a plurality of liquid crystal capsules over the common electrode and the pixel electrode, wherein each of the plurality of liquid crystal capsules includes a shell and a core having a plurality of liquid crystal molecules therein, and wherein a gap distance between the liquid crystal molecules in adjacent liquid crystal capsules is equal to or greater than 20 nm and equal to or smaller than 0.3 times of a capsule diameter of the adjacent liquid crystal capsules.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: January 19, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyeong-Jin Kim, Kyung-Su Ha, Eun-Woo Lee
  • Publication number: 20210011345
    Abstract: A liquid crystal display device includes a first substrate and a second substrate facing each other; a thin film transistor in a pixel region on the first substrate; a first electrode on the thin film transistor; and a second electrode on the first electrode and connected to the thin film transistor, wherein the second electrode includes a first rib electrode and a second rib electrode, wherein the first rib electrode and the second rib electrode are connected by a connection electrode, wherein a vertical opening is between the first rib electrode and the second rib electrode and along a first direction, and wherein the connection electrode includes a hole at a region adjacent to the vertical opening.
    Type: Application
    Filed: July 3, 2020
    Publication date: January 14, 2021
    Applicant: LG Display Co., Ltd.
    Inventors: Won-Taeck KIM, Kyung-Su HA
  • Patent number: 10459297
    Abstract: A liquid crystal display device includes a substrate; a pixel electrode and a common electrode in a pixel region on the substrate and spaced apart from each other; and a liquid crystal layer on the pixel electrode and the common electrode and including a first liquid crystal capsule and a second liquid crystal capsule, wherein the first liquid crystal capsule includes first liquid crystal molecules having positive dielectric constant anisotropy and the second liquid crystal capsule includes second liquid crystal molecules having negative dielectric constant anisotropy.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 29, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Su Ha, Sang-Wook Lee, Won-Taeck Kim
  • Publication number: 20190155074
    Abstract: Disclosed is a liquid crystal display device that may include a first substrate; a first electrode on the first substrate, the first electrode including a plurality of first inclined planes; a nanocapsule liquid crystal layer on the first electrode, the nanocapsule liquid crystal layer including a plurality of nano-sized capsules dispersed in a buffer layer, each of the plurality of nano-sized capsules including nematic liquid crystal molecules having a negative dielectric constant anisotropy; and a second electrode on the nanocapsule liquid crystal layer, the second electrode including a plurality of second inclined planes facing the plurality of first inclined planes, wherein the nanocapsule liquid crystal layer is substantially, optically isotropic in a normal state, and is optically anisotropic when a voltage is applied to the first and second electrodes.
    Type: Application
    Filed: January 4, 2019
    Publication date: May 23, 2019
    Inventors: Kyeong-Jin Kim, Jung-Im Hwang, Ji-Na Jeon, Kyung-Su Ha, Min-Geun Choi
  • Patent number: 10222644
    Abstract: Disclosed is a liquid crystal display device that may include a first substrate; a first electrode on the first substrate, the first electrode including a plurality of first inclined planes; a nanocapsule liquid crystal layer on the first electrode, the nanocapsule liquid crystal layer including a plurality of nano-sized capsules dispersed in a buffer layer, each of the plurality of nano-sized capsules including nematic liquid crystal molecules having a negative dielectric constant anisotropy; and a second electrode on the nanocapsule liquid crystal layer, the second electrode including a plurality of second inclined planes facing the plurality of first inclined planes, wherein the nanocapsule liquid crystal layer is substantially, optically isotropic in a normal state, and is optically anisotropic when a voltage is applied to the first and second electrodes.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: March 5, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyeong-Jin Kim, Jung-Im Hwang, Ji-Na Jeon, Kyung-Su Ha, Min-Geun Choi
  • Patent number: 10168566
    Abstract: Discussed is a nanocapsule liquid crystal display device. The nanocapsule liquid crystal display device according to an embodiment includes a substrate; a pixel electrode and a common electrode on the substrate; a first polarization plate disposed under the substrate and including a first polarization layer; and a second polarization plate contacting at least one of the pixel electrode and the common electrode and including a second polarization layer and a nanocapsule liquid crystal layer between the second polarization layer and the substrate.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 1, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Ji-Na Jeon, Kyeong-Jin Kim, Jung-Im Hwang, Min-Geon Choi, Kyung-Su Ha
  • Patent number: 10162206
    Abstract: Provided herewith is a liquid crystal display device comprising a substrate; first and second electrodes on a first surface of the substrate, the first and second electrodes being spaced apart from each other; a liquid crystal capsule layer on the first and second electrodes; and a dielectric layer on the liquid crystal capsule layer. In this liquid crystal display device the dielectric constant of the dielectric layer is lower than the dielectric constant of the liquid crystal capsule layer.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: December 25, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Min-Geon Choi, Kyeong-Jin Kim, Kyung-Su Ha
  • Patent number: 10018867
    Abstract: A nano capsule liquid crystal layer and a liquid crystal display having the same are provided. The nano capsule liquid crystal layer includes a buffer layer and a plurality of nano capsules disposed in the buffer layer. An inside of each of the nano capsules includes liquid crystal molecules, and additives each having a center molecule and at least two first peripheral molecules connected to the center molecule and spaced apart from each other, and that are mixed with the liquid crystal molecules. The first peripheral molecules have a same phase as the liquid crystal molecule.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: July 10, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Su Ha, Kyeong-Jin Kim, Ji-Na Jeon
  • Patent number: 9971184
    Abstract: Discussed is a liquid crystal display device that includes a substrate having a pixel electrode and a common electrode formed thereon, a first polarizing plate on a bottom surface of the substrate, and having a polarizing axis of a first direction, a nanocapsule liquid crystal layer on the pixel electrode and the common electrode, and including a buffer layer and nanocapsules, each nanocapsules being filled with liquid crystal molecules, being oil-soluble, and being dispersed in the buffer layer, and a second polarizing plate on the nanocapsule liquid crystal layer, and having a polarizing axis of a second direction perpendicular to the first direction.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: May 15, 2018
    Assignees: LG DISPLAY CO., LTD., IMAGELAB CO., LTD.
    Inventors: Kyeong-Jin Kim, Min-Geun Choi, Kyung-Su Ha, Hyun-Ha Hwang, Seung-Gon Kang
  • Patent number: 9964794
    Abstract: Discussed is a liquid crystal display device according to an embodiment including a substrate including a unit pixel having first to third sub-pixels arranged in a delta structure; and a first electrode and a second electrode in each of the first to third sub-pixels, each of the first and second electrodes including a first bar and a plurality of second bars branching off from the first bar, the first bar of the first electrode and the first bar of the second electrode facing each other and being parallel with each other, the second bars of the first electrode and the second bars of the second electrode interleaved with each other, wherein the first and second bars of the third sub-pixel makes first and second angles, respectively, relative to a first polarization axis.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: May 8, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Su Ha, Ji-Na Jeon, Eun-Woo Lee
  • Publication number: 20180120608
    Abstract: A liquid crystal display device includes a substrate; a pixel electrode and a common electrode in a pixel region on the substrate and spaced apart from each other; and a liquid crystal layer on the pixel electrode and the common electrode and including a first liquid crystal capsule and a second liquid crystal capsule, wherein the first liquid crystal capsule includes first liquid crystal molecules having positive dielectric constant anisotropy and the second liquid crystal capsule includes second liquid crystal molecules having negative dielectric constant anisotropy.
    Type: Application
    Filed: September 20, 2017
    Publication date: May 3, 2018
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Su HA, Sang-Wook LEE, Won-Taeck KIM
  • Publication number: 20170315388
    Abstract: A liquid crystal display device includes: a substrate; a thin film transistor in a pixel region over the substrate; a common electrode over the thin film transistor; a pixel electrode connected to the thin film transistor; and a liquid crystal layer including a plurality of liquid crystal capsules over the common electrode and the pixel electrode, wherein each of the plurality of liquid crystal capsules includes a shell and a core having a plurality of liquid crystal molecules therein, and wherein a gap distance between the liquid crystal molecules in adjacent liquid crystal capsules is equal to or greater than 20 nm and equal to or smaller than 0.3 times of a capsule diameter of the adjacent liquid crystal capsules.
    Type: Application
    Filed: April 28, 2017
    Publication date: November 2, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyeong-Jin KIM, Kyung-Su HA, Eun-Woo LEE
  • Publication number: 20170307917
    Abstract: Disclosed is a liquid crystal display device that may include a first substrate; a first electrode on the first substrate, the first electrode including a plurality of first inclined planes; a nanocapsule liquid crystal layer on the first electrode, the nanocapsule liquid crystal layer including a plurality of nano-sized capsules dispersed in a buffer layer, each of the plurality of nano-sized capsules including nematic liquid crystal molecules having a negative dielectric constant anisotropy; and a second electrode on the nanocapsule liquid crystal layer, the second electrode including a plurality of second inclined planes facing the plurality of first inclined planes, wherein the nanocapsule liquid crystal layer is substantially, optically isotropic in a normal state, and is optically anisotropic when a voltage is applied to the first and second electrodes.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Inventors: Kyeong-Jin KIM, Jung-Im HWANG, Ji-Na JEON, Kyung-Su HA, Min-Geun CHOI
  • Patent number: 9759943
    Abstract: Disclosed is a liquid crystal display device that may include a first substrate; a first electrode on the first substrate, the first electrode including a plurality of first inclined planes; a nanocapsule liquid crystal layer on the first electrode, the nanocapsule liquid crystal layer including a plurality of nano-sized capsules dispersed in a buffer layer, each of the plurality of nano-sized capsules including nematic liquid crystal molecules having a negative dielectric constant anisotropy; and a second electrode on the nanocapsule liquid crystal layer, the second electrode including a plurality of second inclined planes facing the plurality of first inclined planes, wherein the nanocapsule liquid crystal layer is substantially, optically isotropic in a normal state, and is optically anisotropic when a voltage is applied to the first and second electrodes.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: September 12, 2017
    Assignee: LG DISPLAY CO, LTD.
    Inventors: Kyeong-Jin Kim, Jung-Im Hwang, Ji-Na Jeon, Kyung-Su Ha, Min-Geun Choi
  • Publication number: 20170192265
    Abstract: A nano capsule liquid crystal layer and a liquid crystal display having the same are provided. The nano capsule liquid crystal layer includes a buffer layer and a plurality of nano capsules disposed in the buffer layer. An inside of each of the nano capsules includes liquid crystal molecules, and additives each having a center molecule and at least two first peripheral molecules connected to the center molecule and spaced apart from each other, and that are mixed with the liquid crystal molecules. The first peripheral molecules have a same phase as the liquid crystal molecule.
    Type: Application
    Filed: November 28, 2016
    Publication date: July 6, 2017
    Applicant: LG Display Co., Ltd.
    Inventors: Kyung-Su HA, Kyeong-Jin KIM, Ji-Na JEON
  • Publication number: 20170153471
    Abstract: Discussed is a liquid crystal display device according to an embodiment including a substrate including a unit pixel having first to third sub-pixels arranged in a delta structure; and a first electrode and a second electrode in each of the first to third sub-pixels, each of the first and second electrodes including a first bar and a plurality of second bars branching off from the first bar, the first bar of the first electrode and the first bar of the second electrode facing each other and being parallel with each other, the second bars of the first electrode and the second bars of the second electrode interleaved with each other, wherein the first and second bars of the third sub-pixel makes first and second angles, respectively, relative to a first polarization axis.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 1, 2017
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Su HA, Ji-Na JEON, Eun-Woo LEE
  • Publication number: 20170153489
    Abstract: Provided herewith is a liquid crystal display device comprising a substrate; first and second electrodes on a first surface of the substrate, the first and second electrodes being spaced apart from each other; a liquid crystal capsule layer on the first and second electrodes; and a dielectric layer on the liquid crystal capsule layer. In this liquid crystal display device the dielectric constant of the dielectric layer is lower than the dielectric constant of the liquid crystal capsule layer.
    Type: Application
    Filed: November 29, 2016
    Publication date: June 1, 2017
    Inventors: Min-Geon Choi, Kyeong-Jin Kim, Kyung-Su Ha